Plow.



Patented July ll, I899. J. OLIVER.

PLOW

(Application filed fly 16, 1899.)

(No Model.)

1N VEN TOR flaw 7 Attorney A UNITED STATES PATENT ()FFIcE.

JAMES OLIVER, OF SOUTH BEND, INDIANA, ASSIGNOR TO THE SOUTH BEND IRoNWORKS, oFsAME PLACE.

PLow.

SPECIFICATION forming art of LetterstPatent No. 628,632, dated July 11,1899.

Application filed May 16,1899. Serial No. 717,076. (No model.)

T at whom it may concern:

Be it known that I, JAMES OLIVER, ofSouth Bend, in the county of St.Joseph and State of Indiana, have invented certain new and usefulImprovementsin Flows; and I do hereby declare the following to be afull, clear, and

exact description of the invention, such as will enable others skilledin the art to which itappertains to make and use the same.

My invention relates to an improvement in plows, the object of the samebeing to so construct a plow standard and moldboard that when the latteris placed on the'standard it seats itself solidly against the adjacentedge of the plow-point, thus obviating the necessityof forcing themoldboard to its seat by the screw-bolts which secure it to thestandard.

A further object is to provide a standard constructed to receive eitheran ordinary chilled moldboard or steel mold which are of differentthicknesses and support them both with their outer faces flush and online with the contour of the point.

A further object is to strengthen the moldboard at or near the pointwhere the rear edge of the plow-standard joins the moldboard or at thepoint where the greatest strain falls on the moldboard.

With these ends in View my invention consists in the parts andcombinations of parts, as will be more fully described, and pointed outin the claims.

In the accompanying drawings, Figure 1 is aview of my improved plow.Fig. 2 is a view of the standard and moldboard, the latter beingdetached. Fig. 3 is a sectional view through the plow, and Fig. 4: is aView showing the steel moldboard on the standard.

A represents a standard of usual shape carrying the landside B and point0, the landside and point being secured to the standard in the usualmanner. The standard is provided on its front face, near the upper edgeof the point,

with a tapered or inclined lug a, adapted to enter a depression 79,formed in the under side of the chilled or cast moldboard, the lug anddepression being so formed that when the moldboard is bolted to thestandard the lug a forces the moldboard downwardly and forwardly againstthe upper or rear edge of the plow-point, thus making a'close-fittingjoint and rendering it impossible for the moldboard to Work awayfrointhe plow-point.

In plows as heretofore constructed the boltholes in the moldboard andstandard were so constructed and located'with relation to each otherthat the act of driving the bolts home forced the moldboard against thepoint and the bolts alone held the moldboard in place. With suchconstruction the driving of the bolts home marred their threads to suchan extent that the bolts were unfit for use after being once takenapart. .With my improved construction the tapered lug on the standardand corresponding depression on the under side of the moldboard tendnaturally to hold the moldboard against the upper edge of the point, andhence when the bolts are secured in place all the tendency to movementof the moldboard is borne by the lug. Hence the bolts simply operate. tohold the moldboard seated against the standard and do not receive anyof. the rearward thrust or strain falling on the moldboard. The standardA is also provided at intervals through its front face with a series oflugs 0, having flat upper faces. These lugs c are of a height equal tothe difference in thickness between the ordinary chilled moldboard andthe steel moldboard.

The chilled or cast moldboard A is provided with depressions d in itsrear face to receive the lugs c on the standard A, thus permitting themoldboard to rest solidly on the standard with its outer face flush withthe outer face of the point and conforming to the contour of the point,whereas the steel moldboard D rests on the lugs and is supported withits outer face flush with the outer face of the point. The steelmoldboard D is provided on the rear side of itsfront edge with a rib d,which latter is adapted to rest against the standard and form a closejoint therewith. With this construction it will be seen that themoldboards are interchangeable, thus adapting the standard for eitherthe thick cast moldboard or the comparatively thin steel moldboard.

The strain on the moldboard falls on the point or line where the rearend of the mold- IOO of moldboards at this point. This object Iaccomplish by providing the standard A near its top with a groove ordepression 6, gradually decreasing in depth rearwardly and providing therear face of the cast moldboard D' with an upwardly and rearwardlyextendoperates to a large extent to prevent breakage of the moldboard atthis point.

It is evident that many slight changes might be made in the relativearrangement of parts herein shown and described Without departing fromthe spirit and-scope of myinve'ntion. Hence I would have it understoodthat I- do not wish to restrict myself to the exact construction ofdescribed; but,-

Haying fully described my invention, What I- claim as-new, and desire tosecure by Letters Patent, is

1. In a plow, the combination with a standard having a tapered lug onits outer front face,- of a moldboard having a depression adapted toreceive said-lu g, and bolts for locking the moldboard inplace.

2. In a plow, the combination with a standpa rts herein sh own and ardhaving a tapered lug on its outer front face, and a point secured tothestandard below or in advance'of the lug, of a moldboard having ashoulder located in a depression on its rear face the said shoulderadapted to engage the tapered lug for holding the moldboard solidlyagainst the rear edge of the point and bolts for locking the inoldboardin place.

3; In a plow, the combination with a standard having a series of lugsdisposedat inter vals on its outer front face, said lugs adapted to formseats or supports for a thin steel moldboard, or rest within depressionsformed in a thicker cast moldboard, of a plow-point secured to thestandard, substantially as set forth,

4. In a plow, the combination witha standard having a groove formed inits'f'ront face near its upper edge, of a moldboard having an integralrib adapted to rest Within said groove, the rib projecting rearward lyor laterally beyond the rear edge of the standard, substantially as setforth.

In testimony whereof- I have signed this specification in the presenceof two-subscribing witnesses.

JAMES OLIVER.

Witnesses:

F. O. NIPPoLD, EDWIN NIOAR.

